Actions
All four quadriceps are powerful extensors of the knee joint. They are crucial in walking, running, jumping and squatting. Because rectus femoris attaches to the ilium, it is also a flexor of the hip. This action is also crucial to walking or running as it swings the leg forward into the ensuing step. The quadriceps, specifically the vastus medialis, plays the important role of stabilizing the patella and the knee joint during gait.
Read more about this topic: Quadriceps Femoris Muscle
Famous quotes containing the word actions:
“I also believe that few people remain completely untouched by the thought that instead of the life they lead there might also be another, where all actions proceed from a very personal state of excitement. Where actions have meanings, not just causes. And where a person, to use a trivial word, is happy, and not just nervously tormenting himself.”
—Robert Musil (1880–1942)
“Throughout my life, I have seen narrow-shouldered men, without a single exception, committing innumerable stupid acts, brutalizing their fellows and perverting souls by all means. They call the motive for their actions fame.”
—Isidore Ducasse, Comte de Lautréamont (1846–1870)
“They are actions that a man might play,
But I have that within which passes show,
These but the trappings and the suits of woe.”
—William Shakespeare (1564–1616)